Lubricants, industrial oils and related products (class L). Family C (gears) - Specifications of categories CKH, CKJ and CKM (lubricants open and semi-enclosed gear systems)
1 Scope
This document establishes an extended classification which includes sub-categories
of environmentally acceptable lubricants and specifies the minimum requirements for
mineral or synthetic based lubricants for the categories CKH, CKJ and CKM, according
to ISO 6743‑6, and their sub-categories of environmentally acceptable lubricants, intended for
the lubrication of open and semi-enclosed gears.
This document covers the lubricants applied in the open and semi-enclosed gear systems
most currently encountered in the industry. It does not cover the extreme cases of
use with regards to temperature and extreme charges conditions.
NOTE 1 For use in exceptional conditions, suppliers and purchasers of lubricants can mutually
agree on additional testing methods and acceptability criteria of the products.
NOTE 2 This document can be read in conjunction with ISO 6743‑6.